Hadithcore
Mishkat al-Masabih, 442

She also reported God’s messenger as saying, “When the parts which are circumcised pass one another washing is necessary,” adding that God’s messenger and she did that, and then washed. Tirmidhi and Ibn Majah transmitted it.

وَعَنْ عَائِشَةَ قَالَتْ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: إِذَا جَاوَزَ الْخِتَانُ الْخِتَانَ وَجَبَ الْغُسْلُ. فَعَلْتُهُ أَنَا وَرَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ فَاغْتَسَلْنَا. رَوَاهُ التِّرْمِذِيُّ وَابْنُ مَاجَه

References1 variant
In-Book Reference
Book 3, Hadith 146